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AlliedSignal Bendix/King KMA-24

The AlliedSignal Bendix/King KMA-24 is one of the most impressive audio panels out there. It has individual push buttons for speakers and headphones on each audio line. While other audio panels only let you choose between headset and speaker options, the KMA-24 gives you the flexibility to choose speaker, headset, both, or none. The AUTO COMM function selects the correct audio when you change transmitters. If you don't need the marker beacon system, save some money and get the KMA-24H. The (-71) version of the KMA-24H adds a voice-operated intercom system. Both "H" models have a fail-safe "EMG" that directly connects COMM 1 to the pilot's microphone and headsets.

FEATURES
  • Compact, fully solid-state unit containing pushbutton audio selector panel, speaker and headphone isoaltion amplifiers, and a marker beacon receiver
  • Styled to match with the other King Silver Crown units but can be integrated into any 500 ohm output audio system
  • Can handle as many three transceivers and six receivers
  • Models with different features and combinations of marker light presentation, AUTO, 2 COMMs, 2 NAVs, DME, ADF, HF, TEL selections (see table below)
  • Has two unswitched inputs for use as altimeter warning and telephone ringer
  • Has outputs for ramp hailer and passenger address or intercom
  • Seperate isolation amplifiers are provided for headphones and speaker to provide isolation even when the same source is selected
  • Three isolated 16 ohm resistors provided for transceiver speaker output loads
  • Automatic dimmimg for marker beacon lights
  • 14V or 28VDC operation
  • TSO'd
  • NOTE: FACTORY NEW UNITS MUST BE INSTALLED BY SOUTHEAST AEROSPACE OR ANOTHER BENDIX/KING AUTHORIZED DEALER
SPECIFICATIONS
Size: 6.25"W x 1.3"H x 6.81"L Weight: 1.7 lbs.
Design: All solid state Frequency (marker): Crystal-controlled at 75MHz
TSO Compliance (marker): TSO C35d, Class A, Env. Cat. /A1D1/A/PKS/XXXXXXZBAAA TSO Compliance (audio amp): TSO C50b, Env. Cat. /A1D1/A/PKS/XXXXXXZBAAA
Applicable Documents: RTCA DO-143, DO-78A, DO-160 Duty Cycle: Continuous
Temperature Range: -20 to +55C Sensitivity (marker): LO 1000uv hard, HI 200uv hard
Selectivity (marker): 6db at +-10KHz min, 40db at +-200KHz max Input Impedence (marker): 50 ohm
Output (marker): Capable of 4 milliwatts into isolation amplifier input of 500 ohms Ext Lamp Output (marker): 125mA max each bulb
Input Impedence (iso amp): 500 ohms Input Isolation (iso amp): 40dB between inputs
Input Muting (iso amp): At least 55dB when mic is keyed Headphone Output: 50 milliwatts into 500 ohm load
Distortion: Less than 5% at rated output Frequency Response: Within 6dB from 350Hz to 6000Hz